Secondary recovery of petroleum
Patent
·
OSTI ID:6985917
A procedure is described for the secondary recovery of petroleum, which, in particular, involves a process for reducing the amount of water recovered from a producing well in a waterflooding process for recovering petroleum from a subterranean oil-bearing formation. This reduction in water is accomplished by introducing a stable liquid dispersion of a water soluble anionic vinyl addition polymer and a water-soluble cationic polymer. (5 claims)
- Assignee:
- Nalco Chemical Co.
- Patent Number(s):
- US 3779316
- OSTI ID:
- 6985917
- Country of Publication:
- United States
- Language:
- English
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